Well.. Atleast we got some clarification

Ankooey kids are good entities. Which means that the BIW is also a good entity since he encourages saving them. It's been heavily implied but the connection between Miranda and Tabitha has been cemented.

Boyd's Parkinson's has not been healed by the worms. His illness is just sporadic.

There seems to be a good vs evil battle going on here. Each side has their "prophets". But the prophets have free will so they are not compelled to follow the demands of their respective entity.

Good- Victor, Tabitha, Boyd, Ethan, BIW, Ankooey Kids, Ghosts (The bartender, Father Khatri)

Evil- Elgin, Sara, kimono lady, the monsters. Ghosts( Thomas, Abby)

unknown- Jade, Jim, Tillie, Marielle, Julie, Randall Christopher/Jasper

Edit For clarity..

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I'm not saying that sara is evil. I'm saying that she is connected to the evil entity. The evil entity is sadistic. It told sara that Fatima was near but purposefully didn't disclose a specific location. Probably so that the townsfolk would leave the safety of their houses. Or just to give them a false sense of hope